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How to Cold Crash Beer?

Do you want to make the perfect beer? Are you prepared to get your hands dirty and ensure that your beer is brewed to perfection?

If your answer is yes, then cold crashing beer is something you should definitely try out.

What Is Cold Crashing?

Cold crashing is a process of rapid cooling used in homebrewing to clear up unstable proteins and sediment particles in beer. Cold crashing can be done both before and after fermentation, although it’s usually done after fermentation.

This leads to a clearer, crisper taste with less sediment at the bottom of the bottle or keg. In short, cold crashing helps your homebrewed beverage look and taste better!

Benefits of Cold Crashing Beer

There are several benefits to cold crashing beer:

  • Reduces chill haze
  • Decreases contact time with yeast cells
  • Increases shelf-life
  • Improves clarity and flavor
  • Allows for easier filtering of particulates such as hop material and protein breaks down.

How To Cold Crash Beer

To cold crash beer, you need a refrigeration unit capable of achieving temperatures around 30-40˚F (-1-4˚C).

A regular household refrigerator will do just fine if you have one available. If not, there are several dedicated units on the market designed specifically for this purpose.

Step-by-Step Guide To Cold Crashing Beer

  1. Clean and sanitize the fermenter and all equipment thoroughly prior to filling the fermenter with wort/beer
  2. Place chilled wort/beer into the fermenter
  3. Pitch yeast at the desired temperature
  4. Let fermentation finish (you should check gravity readings daily)
  5. Transfer chilled wort/beer into a sanitized secondary vessel for cold crashing (typically a carboy)
  6. Store carboy in the refrigerator or dedicated chilling unit at a temperature of 30-40˚F (-1-4˚C) for 1 week or until desired clarity is reached (check gravity readings once per day during this period)

Tips For Cold-Crashing Beer

Here are some tips for when cold crashing beer:

  • Make sure that your fermenter and all equipment are sanitized before adding your brew – this will help prevent off flavors from forming due to bacteria or wild yeasts present in unsanitary conditions! Also, make sure that you transfer quickly so oxygen doesn’t have time o oxidize the beer causing potential oxidation of flavors as well!
  • Use filtered water when chilling – this will help prevent any unwanted minerals from entering the brew while cooling it down rapidly!
  • Don’t forget to take gravity readings throughout the process – this will help you determine when fermentation has stopped (and cold crashing can begin!) as well as when desired clarity has been achieved!
  • Use fining agents such as gelatin or isinglass during transfer – these agents work by binding with suspended particles in suspension causing them to precipitate out thus making them easier to filter out post-transfer!
  • Double-check that all seals on carboys/kegs etc…are airtight prior to transferring wort/beer – this will help prevent oxygen from entering during transfer which can lead to oxidation of flavors as well as premature spoilage post-transfer!


Cold crashing beer can be a great way to take your homebrewing skills up a notch by ensuring better clarity, flavor, and longer shelf life.

With proper sanitation practices along with some fining agents used during transfer plus storing chilled at temperatures between 30-40˚F (-1-4˚C) over 1 week (or until desired clarity is achieved), you should be able to achieve beautiful results with minimal effort!

Author Image Fabian
I’m Fabian, homebrewer and beer taster. I’m also the editor of Beer100. I love travelling the world and trying out new handcraft beer and different beer styles. I’m not an expert in brewing beer, but I know a few things about beer, which I share on this blog. If you need help or have a question, please comment below.

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